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Starch Ether

Hydroxypropyl Starch Ether (HPS)

Starch Ether

Product Name:

Hydroxypropyl Starch Ether (HPS)

Description:

Hydroxypropyl Starch Ether (HPS) is a modified starch derived from natural starch through an etherification process. It appears as a white or beige powder and is soluble in cold water, forming a transparent or translucent viscous liquid. HPS is widely utilized in the construction industry to enhance the performance of cement- and gypsum-based materials. Beyond construction, it serves as a thickener, stabilizer, and adhesive in the food, paper, and textile industries.

Physical Properties:

  • Appearance: White or beige powder
  • Solubility: Soluble in cold water
  • Moisture Content: ≤ 12%
  • pH Value: 5-11 (1% solution)

Chemical Properties:

  • Chemical Nature: Polysaccharide with ether bonds
  • Stability: Stable in neutral and alkaline conditions
  • Compatibility: Compatible with cellulose ethers, surfactants, and other additives

Key Features:

  • Excellent thickening, water retention, and adhesion properties
  • Enhances workability and sag resistance in construction materials
  • Reduces slip and improves adhesion in tile adhesives
  • Biodegradable and environmentally friendly

Applications:

Construction Industry:

  • Mortar and Plaster: Improves consistency, workability, and water retention
  • Tile Adhesives: Enhances adhesion and reduces slip
  • Self-Leveling Compounds: Prevents delamination and improves flow
  • Spray Mortars: Enhances rheology and stability

Food Industry:

  • Acts as a thickener, stabilizer, and adhesive in various food products

Paper Industry:

  • Used for internal and surface sizing to improve paper smoothness and reduce ink consumption

Textile Industry:

  • Applied as a warp size to enhance abrasion resistance and weaving efficiency

Recommended Usage:

  • In Construction Materials: 0.01% to 0.1% by weight of the total dry mix
  • With Cellulose Ethers: Can reduce cellulose ether requirement by 20-30% when used in combination

Packaging and Storage:

  • Packaging: 25 kg bags
  • Storage: Store in a cool, dry place, protected from humidity and direct sunlight
  • Shelf Life: 12-24 months

Safety and Handling:

  • Toxicity: Non-toxic and odorless
  • Precautions: Avoid inhalation and contact with eyes; use standard protective equipment when handling powders